To avoid spam robots and other software from gaining access to a site a device called a captcha is used. For example, a person who cannot see a picture can have the text alternative read aloud using synthesized speech. Becausesome users with disabilities will still not be able to access sites that meet the minimum requirements, the Working Group provides recommendations for additional steps. Providing text alternatives allows the information to be rendered in a variety of ways by a variety of user agents. Additional information, non-text content can take a number of forms, and this Success Criterion specifies how each is to be handled. For non-text content that is not covered by one of the other situations listed below, such as charts, diagrams, audio recordings, pictures, and animations, text alternatives can make the same information available in a form that can be rendered through any modality (for example, visual. Sometimes there are non-text exercises that are used to prove you are human. Text alternatives may help some people who have difficulty understanding the meaning of photographs, drawings, and other images (e.g., line drawings, graphic designs, paintings, three-dimensional representations graphs, charts, animations, etc. Short and long text alternatives can be used as needed to convey the information in the non-text content. Non-text content that is time-based media is made accessible through.2. People who are deaf, are hard of hearing, or who are having trouble understanding audio information for any reason can read the text presentation. Not marking the content in any way, though, leaves users guessing what the non-text content is and what information they may have missed (even though they have not missed anything in reality).